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A molecular logic gate construction method based on interaction between cyanine dyes and metal ions

A technology of metal ions and construction methods, applied in the direction of molecular computers, calculation models, calculations, etc., to achieve the effect of reducing the size of the computer, large switching ratio, and easy detection

Active Publication Date: 2017-10-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there is no interaction between cyanine dyes and metal ions. The maximum absorption value of each reaction product between 510nm-520nm and the maximum absorption value between 650nm-665nm is the highest among the maximum absorption values ​​in the wavelength range. The ratio of values ​​reported for the output signal

Method used

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  • A molecular logic gate construction method based on interaction between cyanine dyes and metal ions
  • A molecular logic gate construction method based on interaction between cyanine dyes and metal ions
  • A molecular logic gate construction method based on interaction between cyanine dyes and metal ions

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take four EP tubes, numbered 1, 2, 3 and 4, and do the following:

[0032] Add 20 μL to tube 1 with a concentration of 200×10 -6 mol / L cyanine dye I solution, then add 10×10 - 3 mol / L, Tris-HCl buffer solution with pH=8.5, make the solution volume 1mL to obtain solution 1;

[0033] Add 10 μL of KCl solution with a concentration of 1 mol / L to the No. 2 tube, and then add 20 μL with a concentration of 200×10 -6 mol / L cyanine dye I solution, finally add 10×10 -3 mol / L, Tris-HCl buffer solution with pH=8.5, make the solution volume 1mL to obtain solution 2;

[0034] Add 20 μL to the No. 3 tube with a concentration of 200×10 -6 mol / L cyanine dye I solution, then add 10×10 - 3 mol / L, Tris-HCl buffer solution with pH=4.0, make the solution volume 1mL to obtain solution 3;

[0035] Add 10 μL of KCl solution with a concentration of 1 mol / L to No. 4 tube, and then add 20 μL with a concentration of 200×10 -6 mol / L cyanine dye I solution, finally add 10×10 -3 mol / L, Tris-...

Embodiment 2

[0045] Take four EP tubes, numbered 1, 2, 3 and 4, and do the following:

[0046] Add 40 μL to the No. 1 tube with a concentration of 200×10 -6 mol / L cyanine dye II solution, then add 10×10 - 3 mol / L, Tris-HCl buffer solution with pH=8.5, make the solution volume 1mL to obtain solution 1;

[0047] Add 40 μL of NaCl solution with a concentration of 1 mol / L to the No. 2 tube, and then add 40 μL with a concentration of 200×10 -6 mol / L cyanine dye II solution, finally add 10×10 -3 mol / L, Tris-HCl buffer solution with pH=8.5, make the solution volume 1mL to obtain solution 2;

[0048] Add 40 μL to tube 3 with a concentration of 200×10 -6 mol / L cyanine dye II solution, then add 10×10 - 3 mol / L, Tris-HCl buffer solution with pH=4.0, make the solution volume 1mL to obtain solution 3;

[0049] Add 40 μL of NaCl solution with a concentration of 1 mol / L to the No. 4 tube, and then add 40 μL with a concentration of 200×10 -6 mol / L cyanine dye II solution, finally add 10×10 -3 mo...

Embodiment 3

[0059] Take four EP tubes, numbered 1, 2, 3 and 4, and do the following:

[0060] Add 50 μL concentration of 200×10 to tube 1 -6 mol / L cyanine dye III solution, then add 10×10 - 3 mol / L, Tris-HCl buffer solution with pH=8.5, make the solution volume 1mL to obtain solution 1;

[0061] Add 40 μL to the No. 2 tube at a concentration of 1×10 -3 mol / L of TbCl 3 solution, then add 50 μL to a concentration of 200×10 -6 mol / L cyanine dye III solution, finally add 10×10 -3 mol / L, Tris-HCl buffer solution with pH=8.5, make the solution volume 1mL to obtain solution 2;

[0062] Add 50 μL to tube 3 with a concentration of 200×10 -6 mmol / L cyanine dye III solution, then add 10×10 - 3 mol / L, Tris-HCl buffer solution with pH=4.0, make the solution volume 1mL to obtain solution 3;

[0063] Add 40 μL to the No. 4 tube with a concentration of 1×10 -3 mol / L of TbCl 3 solution, then add 50 μL to a concentration of 200×10 -6 mol / L cyanine dye III solution, finally add 10×10 -3mol / L, ...

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Abstract

The invention discloses a molecular logic gate construction method based on interaction between cyanine dyes and metal ions. The method comprises the following steps: taking a cyanine dye solution as a template; taking Tris-HCl buffer solutions with different pH values and metal ion solutions as two parallel input signals, and taking the normalized result of absorbance of cyanine dye H-aggregates between 510 nm-520 nm or absorbance of J-aggregates between 650 nm-665 nm as output signals; setting a threshold value to be 0.03-0.3; and when the normalized result is larger than the threshold value, output being 1, and when the normalized result is smaller than the threshold value, output being 0, so that basic Boolean logic gates of an "OR" gate, a " NOR " gate and an "AND NOT " gate are constructed. The constructed molecular logic gates are good in circuit performance, high in sensitivity, large in switch ratio and easier to distinguish; the threshold value can reach 0.3; the output signals are easy to detect; and dependence on detection instruments is small, and detection can be realized through an absorption spectrometer.

Description

technical field [0001] The invention belongs to the technical field of molecular computers, and in particular relates to a method for constructing molecular logic gates based on the interaction between cyanine dyes and metal ions. Background technique [0002] Logic gates are the building blocks of computers and the basic elements of digital logic circuits. Simple logic gates can be made up of transistors, and the combination of these transistors can make a high or low level representing two signals pass through them to produce a high or low signal. High and low levels can respectively represent 1 and 0 in binary, thus realizing logic operations. Logic gates whose logical operations follow the rules of binary Boolean logic are called Boolean logic gates. Common logic gates can be roughly divided into two categories. One is a single-input logic gate (such as "yes" gate and "not" gate), and the other is a multi-input logic gate (such as "and" gate, "or" gate, "exclusive or"...

Claims

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Application Information

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IPC IPC(8): G06N99/00
CPCG06N99/007
Inventor 杨千帆杨春容邹丹杨舒陈见驰杜媛媛
Owner SICHUAN UNIV
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